Intake manifold for internal-combustion engines



Nov. 3, 1925.. 1,560,365

G. M. BALL INTAKE MANIFOLD FOR INTERNAL COMBUSTION ENGINES Filed May 17, 1923 Patented Nov. 3, 1925.

UNITED STATES GUY M. BALL, or DAYTON, OHIO.

INTAKE MANIFOLD FOR INTERNAL-COMBUSTION ENGINES.

Application filed May 17, 1923.

To all whom it may concern:

Be it known that I, GUY M. BALL, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Intake Manifold for Intern-al-Combustion Engines, of which the following is a specification.

This invention relates in general to improvements in engines of the internal combustion character and more particularly to those of the multiple cylinder type.

The object of this invention is to provide an intake manifold whereby a proper amount of fuel will be supplied for each cylinder at all times.

"With the foregoing and other objects in view, the invention consists in the combination of parts and in the details of construction hereinafter described, certain modifications thereof being illustrated in the accompanying drawings, in which:

Fig. 1 is a diagrammatical illustration of a side elevation of an internal combustion engine, showing the intake manifold and carburetor in vertical longitudinal section.

Fig. 2 is a similar view showing a modification of the intake manifold.

Referring more particularly to the drawings, Fig. 1 shows an internal combustion engine having a plurality of cylinders 9. A carburetor 1 having a venturi 1 has attached thereto an upwardly extending pipe An intake manifold i has one of its ends terminating in an injector opening 3 which is arranged adjacent the upper end of the pipe 2. The other end of the manifold 4; is arranged to encircle the injector opening 3 and is secured in a leakproof joint at a point 10. The manifold is provided with an enlarged portion 6 into which the pipe 2 is introduced, the enlarged portion or collector 6 thus encircling the injector opening 3 and the adjacent end of the pipe 2. Ports 5 are arranged in the manifold to correspond with suitable ports in the cylinders for the introduction of vaporized fuels thereinto. A pipe 7 leads from the bottom of the collector 6 into the pipe 2 and terminates therein in an upturned portion 7. This pipe 7 is for the purpose of transferring the liquid fuel present in the collector 6 to the pipe 2 in which it is vaporized.

The fuels and air are mixed in the carburetor 1 and drawn through the passage .2, across the injector opening 3, into the pas- Sel'ial No. 639,575.

sage d. from which they are drawn into the cylinders through the port 5. Due to erratic flow caused by the ariable demands of engine, there is a pulsating flow past the port 5. due to the inertia of the incoming gases. These gases flowing past the ports 5 are picked up and circulated again due to the injector effect at the injector opening 3 set up by the incoming charge travelling from the passage 2 to the manifold l.

There'is always some liquid present in the fuel mixture and it is returned to the collector 6 and in turn drawn off through pipe 7 and subjected to reatomization in the pipe 2.

In the ordinary or terminal end manifold, there is set up a violent pulsating effect due to the spasmodic demands of the cylinders. This causes an imperfect distribution of fuels, and consequently imperfections in the operation of the engine.

In the present invention the fuel mixture is given a flow that is unidirectional thereby producing a more unifornr distribution of fuels. There is also a device totake the deposited liquid fuels and recarburete them. This greatly reduces possibility of dilution of lubrication oil and of carbon troubles and thus insures economy in operation.

Fig. 2 shows a modification of the device disclosed in Fig. 1. A passage 8 is arranged around the collector 6 and leads the exhaust gases from the exhaust manifold to heat the incoming fuel in the collector 6, the pipe 2, and the intake manifold 4. This modification shows the application of the collector basin 6 to a manifold 4 which leads directly to the cylinder ports 5 without the circulation and injector action of the main fuel supply as shown in Fig. 1.

Having thus described my invention, I claim:

1. In an internal combustion engine having a carburetor and a plurality of cylinders, an intake manifold having a flared entrance opening and a portion which extends past the cylinder ports in the manifold, said extended portion terminating in an enlarged collector chamber which surrounds said flared entrance opening, and an intake pipe from the said carburetor extending into said manifold, the end ofthe intake pipe terminating in said enlarged chamber adjacent the flared entrance opening to form an injector.

2. In an internal combustion engine hav- .ing a carburetor and a plurality of cylinders,

an intake manifold having a flared entrance opening and a portion which extends past the cylinder ports in the manifold, said extended portion terminating in an enlarged collector chamber which surrounds said flared entrance opening, an intake pipe from the said carburetor extending into said manifold, the end of the intake pipe terminating in said enlarged chamber adjacent the flared entrance opening to form an injector, and a pipe to drain said chamber in the manifold into the intake pipe.

3. In an internal combustion engine having a carburetor and a plurality of cylinders, an intake manifold having a flared entrance opening and a portion which extends past the cylinder ports in the manifold, said extended portion terminating in an enlarged collector chamber which surrounds said flared entrance opening, an intake pipe from the said carburetor extending into said manifold, the end of the intake pipe terminating in said enlarged chamber adjacent the flared entrance opening to form an injector, and a drain pipe leading from the bottom of said chamber to said intake pipe, said drain pipe terminating in an upturned portion in said intake pipe so that liquid fuel from said chamber will be reatomized in said intake pipe.

4. An intake manifold comprising a distributing pipe adapted to be secured to and feed a plurality of cylinders of an internal combutsion engine, said distributing pipe having a flared entrance opening, an intake pipe having one end positioned adjacent said flared opening to form an injector and the other end adapted to be connected to the carburetor of an internal combustion engine, a collector chamber forming a loop extension of said intake manifold and surrounding the injector, and a drain pipe from said co1- lector chamber to said intake pipe.

In testimony whereof I aflix my signature.

GUY M. BALL. 

